Container base



FIG. 1 is a rear isometric view of a container base, of embodiment one, showing my new design;

FIG. 2 is front isometric view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear isometric view of a container base, of embodiment two, showing my new design;

FIG. 9 is front isometric view thereof;

FIG. 10 is a front elevational view thereof;

FIG. 11 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 12 is a rear elevational view thereof;

FIG. 13 is top plan view thereof; and,

FIG. 14 is a bottom plan view thereof.

The broken lines in the figures illustrate the portions of the design that form no part of the claimed design. The broken lines lid in the figures illustrate environmental subject matter that form no part of the claimed design. 

CLAIM The ornamental design for a container base, as shown and described. 